need more info tia-like age, lights, nutes, schedule. more pics would be helpful. obivously it is something that is going to appear hard to diagnose correctly without these things. most likely had to do with that rose stuff you fed her so more info on that as well-who, what,when ,where,how long, nute ratios, ect.
This way you will somewhat limit responses here to at a minimum half valid.
overall they look very healthy, very good tone of green in them.